Question

Statement I : Oxygen is always present in –2 oxidation state.

Statement II : Stability of oxidation state of group16 for +4 and +6 decreases down the group. 

(1) Both the statements are correct and Statement II is correct explanation of Statement I 

(2) Both the statements are correct and Statement II does not support Statement I

(3) Statement I is correct and II is false 

(4) Statement II is correct and Statement I is false

Answer 1

The correct option is (4) Statement II is correct and Statement I is false.

Oxygen can show –2, –1, -1/2, +1, +2 and 0 oxidation state also.

Stability of +6 oxidation state decreases down the group due to inert pair effect.